**4. Conclusions**

The transition to a circular economy, as a more sustainable and resilient production and consumption model, is increasingly urgent: it will not consist only of an opportunity, but it will be fundamental at different scales for companies, institutions, and governments. The actors able to make this transition effective could collect the benefits of greater competitiveness since before. Since the delineation of this transition is not easy, also due to the nature of the circular economy, typically cross-sectorial and activated by a network of different actors, it becomes very important to have available information to quantify benefits and risks, compare different options, and hence support the decision-making process. The proposed tool ViVACE® has been demonstrated to be able to provide this quantitative information through its adaptation capacity to different industrial sectors and CE actions. Its applications in different contexts, and the types and formats of results that it is able to provide, opens new potential functions and also highlights limits in certain uses and specific needs to be solved and integrated with enhanced versions of the tool. Consequently, deep use of the tool will allow it to become more robust and consolidated, even if some of its features already result in innovation and are still not covered by any other available tool.
